• 한국언론정보학보
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• 제56권
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• pp.86-116
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• 2011

디지털 혁명에 따른 글로벌 공론장의 구조적 변화에도 불구하고, 국제사회의 정보 불평등 문제는 여전히 지속되고 있다. 국제 여론광장을 통한 정보경쟁이 불가피한 오늘날, 미디어 외교는 국가 간 정보전쟁에 있어서 중요한 수단으로 부상했다. 미디어 외교의 중요성에 주목하여, 이 연구는 24시간 영어뉴스 채널이 자국의 대외정책에 어떻게 협력하고 있는가를 실증적으로 검토하고자 했다. 이런 배경에서 리비아 사태와 이해관계가 있는 6개국의 대표적인 뉴스채널(씨엔엔－인터내셔널, 비비씨－월드, 알 자지라, 도이치 벨레, 프랑스24, 러시아 투데이)의 관련 보도를 분석했다. 분석 결과, 의제설정, 태도, 정보원 활용, 원인과 대안 제시, 프레임 등 전반적인 측면에서 각 뉴스채널의 보도는 자국(自國)의 리비아 정책과 연동되는 특징을 보였다. 리비아 개입에 우호적인 국가와 비판적인 국가 간의 보도 양상은 뚜렷하게 구분되었고, 리비아 개입에 우호적인 국가들 간에도 정부 정책의 수위에 따른 차이가 나타났다. 일부 채널은 국제사회가 잘 모르는 리비아 사태의 '맥락' 정보 전달에 더 치중하기도 했다. 이 연구는 각국 뉴스채널들이 자국의 입장과 관점에 따라 리비아 사태를 재맥락화(recontextualization)함으로써 국제사회의 여론에 호소하고 나아가 자국의 입장을 옹호하는 현실을 실증적으로 분석했다. 연구진은 이를 토대로 국제사회에 대한 '수신'과 '발신'의 중요성을 지적하는 한편, 국제사회를 대상으로 한국의 입장과 관점을 효과적으로 전달할 수 있는 'Korea 24'와 같은 전문화된 24시간 영어뉴스 채널의 필요성을 주장한다.

• International Journal of Internet, Broadcasting and Communication
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• 제11권1호
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• pp.27-38
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• 2019

Sensors collect information for Internet of Things (IoT)-based services. However, indoor construction sites have a poor communication environment and many interfering elements that make it difficult to collect sensor information. In this study, a network was constructed between a Bluetooth Low Energy (BLE)-based IoT device based on a serverless IoT framework and a router. This experimental environment was applied to large- and small-scale indoor construction sites. Experiments were performed to test the communication performance of BLE-based IoT devices and routers at indoor construction sites. An analysis of the received signal strength indication (RSSI) graph patterns collected from the communication between the BLE-based IoT devices and routers for different testbed site situation revealed areas with good communication performance and poor communication performance due to interfering factors. The results confirmed that structural components of the building as well as the materials, equipment, and temporary facilities used in indoor construction interfere with the communication performance. Construction project managers will require improved technical knowledge of IoT, such as optimizing the router placement and matching communication between the router and workers, to improve the communication performance for large-scale indoor construction.

• Journal of information and communication convergence engineering
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• 제21권3호
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• pp.208-215
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• 2023

Deep learning techniques provide powerful solutions to several pattern-recognition problems, including Raman spectral classification. However, these networks require large amounts of labeled data to perform well. Labeled data, which are typically obtained in a laboratory, can potentially be alleviated by data augmentation. This study investigated various data augmentation techniques and applied multiple deep learning methods to Raman spectral classification. Raman spectra yield fingerprint-like information about chemical compositions, but are prone to noise when the particles of the material are small. Five augmentation models were investigated to build robust deep learning classifiers: weighted sums of spectral signals, imitated chemical backgrounds, extended multiplicative signal augmentation, and generated Gaussian and Poisson-distributed noise. We compared the performance of nine state-of-the-art convolutional neural networks with all the augmentation techniques. The LeNet5 models with background noise augmentation yielded the highest accuracy when tested on real-world Raman spectral classification at 88.33% accuracy. A class activation map of the model was generated to provide a qualitative observation of the results.

• 한국항공운항학회지
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• 제22권1호
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• pp.85-94
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• 2014

Incheon international airport has been successful, that is, the winner of Airport Service Quality (ASQ) evaluation performed by ACI(Airport Council International) for nine consecutive years. It goes without saying that such an outstanding performance was made not only by airport authority itself but by the collaboration among subcontractors at Incheon international airport. Since Incheon airport is showing more than 80% of outsourcing rate, it is important to mention and study the roles and functions of subcontractors who has made a major contribution to ASQ performance. According to empirical research in this paper, it was found out service attitude, communication skill and interdependence between airport authority and subcontractors were important factors affecting the ASQ score. It is also analyzed that those independent factors have an impact on ASQ performance through the intermediate factor of trust. As a result, service attitude and interdependence between airport authority and subcontractors have statistically a significant effect to the relational satisfaction and ASQ performance. It could be concluded that trust is significant factor determining the causal relationship among service attitude, communication skill, relational satisfaction and ASQ score.

• 전기학회논문지P
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• 제59권1호
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• pp.35-39
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• 2010

The IT project for power plants initiated domestically in 2005 necessitates the power equipment facility and the controllers for those to be sufficiently adaptable for automation system for power substations. This implies that the power plants using power equipments must be developed to satisfy the IEC61850 standards. The IEC61850 communication standards that all power equipment and facility and controllers installed in automation system for power substations must follow has had its Parts 3 and Part 4 established as international standard in January 2002 and Part 10 in May 2005, the last to become international standard. Hence all separate parts of the original IEC61850 standard came to be established as international standards. As a consequence, after 2005, in most power substations around the world the IEC61850 standard is being applied and the prominent makers are geared towards manufacturing products to the IEC61850 standard. The IEC61850 is being recognized as an essential standard that must be applied to not only power substations but for automation of power systems and communication systems. In this research, the Gateway device that connects current SCADA system and IEC61580 based system has been domesticated with Korea‘s own technology and extensive testing was carried out in order to obtain confidence in its performance.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 D
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• pp.3037-3039
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• 2005

The AIS(Automatic Identification System) transmits the position of ships and other information to prevent accidents which could occur in the sea. It has to be developed SOTDMA(Self-Organized Time Division Multiple Access) Algorithm which is important on wireless communication method for the AIS because It is based on ITU(International Telecommunication Union) M.1371-1 of the international standard therefore, we need to develop a performance evaluation simulator efficiently to develop and analyze SOTDMA Algorithm. this paper shows the method of designing it. Real ships access The VHF maritime mobile band but in this performance evaluation simulator several ship objects access the shared memory. Real ships are designed as the object and the wireless communication channel is designed as the shared memory. The ships apply for real virtual data which got from assistance hardware and The SOTDMA Algorithm driving state verifies the performance evaluation simulator by IEC(International Electrotechnical commission) 61993-2. After verifying results the performance evaluation simulator is correctly satisfied with IEC 61993-2. So we expect that it helps not only the AIS technology developed but also verify new SOTDMA Algorithm

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.478-480
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• 2005

The AIS(Automatic Identification System) transmits the position of ships and other information to prevent accidents which could occur in the sea. It has to be developed SOTDMA(Self-Organized Time Division Multiple Access) Algorithm which is important on wireless communication method for the AIS because It is based on ITU(International Telecommunication Union) M.1371-1 of the international standard therefore, we need to develop a performance evaluation simulator efficiently to develop and analyze SOTDMA Algorithm. This paper shows the method of designing it. Real ships access The VHF maritime mobile band but in this performance evaluation simulator several ship objects access the shared memory. Real ships are designed as the object and the wireless communication channel is designed as the shared memory. The ships apply for real virtual data which got from assistance hardware and The SOTDMA Algorithm driving state verifies the performance evaluation simulator by IEC(International Electrotechnical commission) 61993-2. After verifying results the performance evaluation simulator is correctly satisfied with IEC 61993-2. So we expect that it helps not only the AIS technology developed but also verify new SOTDMA Algorithm.

• 무역상무연구
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• 제12권
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• pp.7-37
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• 1999

Electronic Commerce is the new type of business transaction, which sells and advertises the products and services by using the Internet, which is used by more than 500,000,000 people in the worldwide and is spread rapidly to the world. There are no limitations in cyberspace, for example, time, space, and country boundary because every business can be processed in this cyberspace. The use of modern means of communication such as electronic mail and electronic data interchange for the conduct of international trade transactions has been increasing rapidly and is expected to develop further as technical supports such as information highways and the Internet become more widely accessible. However, the communication of legally significant information in the form of paperless messages may be hindered by legal obstacles to the use of such messages, or by uncertainty as to their legal effect or validity. This obstacles pose many difficulties for conducting EC through Internet. The purpose of this thesis is to suggest several issues to be taken into consideration in conducting EC in near future. For this purpose, the article will first take up subjects of what is the present state of EC, what are the legal issues emerging therefrom.

• International Journal of Advanced Culture Technology
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• 제7권4호
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• pp.69-75
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• 2019

In recent years, with the development of IT technology and mobile communication, the powerful communication function of the Internet will gradually eliminate the information asymmetry between supply and demand, and the third-party review website emerges as The Times require. Dianping.com was founded in 2003. After a few years of development, it has become an independent third-party consumer review website worldwide. One of the reasons for such great success is corporate culture, which plays an important role in human resource management. The competition of enterprises is not only the competition of products and cost advantages, but also the superior enterprise culture presented to customers in the international environment. The competition between third-party review sites has been very fierce. In just a few years, many foreign third-party review websites went public and made profits, but some domestic start-ups went bankrupt due to the lack of a good business model and corporate culture. A good business model is particularly important. Taking dianping.com as the research object and combining with the business model of the company, this paper studies the unique corporate culture of dianping.com, hoping to help the company through the investigation and research of this paper, so as to improve the company in the future. And put forward a certain practical significance and value.

• 한국정보전자통신기술학회논문지
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• 제4권4호
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• pp.264-271
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• 2011

항공기의 계기착륙을 유도하는 시스템인 ILS(Instrument Landing System)는 1947년 ICAO(International Civil Aviation Organization)에서 국제표준으로 채택되어 현재는 상용시스템으로 출시되고 있다. 본 논문에서는 통합형 ILS 디지털 송수신 모듈의 설계방법을 제안하였다. 새롭게 제안한 것은 FPGA를 이용한 디지털 이중 AM 변복조기, 샘플링 클럭 생성을 위한 DDS(Direct Digital Synthesizer), DDC(Digital Down converter) 구조의 복조기, DSP 칩을 이용한 AM 스펙트럼 분석기의 디지털 설계 기법이다. 제안한 설계 방법의 유용성을 모듈 개발 및 실험을 통해 확인한 결과, 성능이 우수한 상용 시스템으로의 활용이 가능함을 확인하였다.